# Tagged Questions

Questions about the form and content of output returned by Mathematica for a given input or function application. This can include specific differences produced by older versions of Mathematica.

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### When NSolve for X, Y, only output solution for X

I have an NSolve with two equations and two unknowns (X,Y). There is a unique solution. NSolve currently gives me the solution pair (X,Y). But I only want to read out one of the variables (say X). ...
170 views

### Why is Reap result nested? [closed]

A minimal (toy) example for my question: i= 1; Reap[Do[Sow[i = (i + 1)^2], {4}]] (* {Null, {{4, 25, 676, 458329}}} *) I presume the entire result is a ...
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### How to use MakeExpression in terminal?

This is in continuation to the question in Infix form of PutAppend ( >>> ) does not work with variable. I was trying to use ...
118 views

### Output with NDSolve

I use of the following differential equation: s = NDSolve[{y'[x] == y[x] Cos[x + y[x]], y[0] == 1}, y, {x, 0, 30}] Output. The solution in a plot. What is ...
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### How can I check that the general solution obeys the original differential equation?

For example: I solved the following differential equation: y''[x] == (λ x^(3/4) y[x])/Sqrt[1-x] that 0<x<1 with the ...
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### How to summarize an expression

Is there a similar command as str in R in Mathematica? ...
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### Obtain $\TeX$ code as in StandardForm

This is a question very close related to Breaking up long equations in TeXForm. Last time, because @Adam doest not present a clear goal for this problem, as stated by Massimo Ortolano there's no ...
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### Two unrelated questions: 1. Output of Series[] for function, 2. Output conditional answers as if not conditional [closed]

As mentioned in the title, I have two questions. 1. I have code that looks similar to: ...
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I use Mathematica 9.0.1.0 on Mac OS X 10.10.3. As an example of my issue, we can follow along with the example from the documentation page for $OutputSizeLimit. ... 1answer 65 views ### What's the meaning of <<19>> in the result [duplicate] Try the following: ... 0answers 52 views ### Classify: other output representation I'm working on a classisfy problem. The code is like: CMDDrf = Classify[trainingdata, Method -> "RandomForest"] Then I want to make a prediction based on a ... 1answer 44 views ### Writing a math formula to order results in a certain way [closed] I am not very well educated in math and I have a math puzzle that I'm trying to solve. I have the following list and each object has 3 numbers. The first 2 numbers are better when they are as high as ... 0answers 38 views ### Out[x] not the same as assigned expression [duplicate] There seems to be a difference in the way Mathematica assigns a value to a variable and the way it assigns a value to the next Out object. I don't understand why this is happening. For instance, take ... 2answers 449 views ### how to remove Null's from output? [duplicate] I'm a math enthusiast and I'm looking for examples of rare divisibilities, let's look at the following one: ... 2answers 103 views ### Function that creates a table from two lists I have two lists shown below: list1 = {(0,0,0,0),(0,0,0,1),(0,0,1,0),...,(1,1,1,1)} list2 = {1,5,5,5,...,5} How can I construct a function that outputs a table similar to this:$$\begin{array}{c|c} ... 5answers 232 views ### Making loop based off what I can say in words I have a list of values a: {1,4,11,14} I want to print out values that satisfy b(1+a) = 0 mod 15 where b are the values from 0 to 14. The output I am wanting is ... 3answers 603 views ### Windows command line arguments, stdin & stdout Is it possible to utilize all three: command line arguments, stdin, and stdout all at once in script for Windows? Unix is fairly easy, but I can't get the following to work with Windows. Using the ... 1answer 69 views ### Question about output of a function I'm pretty new to programming in Mathematica and have a question. I wrote this function to factorise large numbers. The outputs are almost as expected, but I don't understand where the null's come ... 1answer 174 views ### Can a field be used for both input and output (example: exchange rate calculator) Suppose I want to build a simple currency converter like this one: The functionality is straightforward: enter an amount in any field box, it gets converted into other currencies whose fields are ... 4answers 92 views ### Save a result containing HoldForm to a file This is the workflow I have. Basically, I want the outputs of the polynomials I computed are in a specific order. (It is not the same one here, this is just an example.). ... 1answer 77 views ### How to get the content size (in pixels) of the output in an output cell? How to get the content size (in pixels, width and height) of the output in an output cell? 2answers 70 views ### NSolve gives {{ x -> #}}, How do I make x = #; I need to use the x value again later I want to use: demand = {1.92, 2.07, 2.37, 2.72, 2.87}*10^6; NSolve[SetV == demand[[1]]/(Cpf (1 - χ)), χ] I want to make a vector of solutions ... 1answer 75 views ### How Unevaluated works Through its Attributes? Check this example: ... 2answers 126 views ### Is there a way to accelerate buffering to the screen I have an application that does a bunch of small computations, mostly Table management, and logic around loops. It takes seconds to execute. However, when I turn on debug (a variable I set for ... 1answer 120 views ### Save value computed in the loop and delete it I am using For loop to calculate a value$z$in every cycle. I would like to create a text file, save the current value$z$in this file and afterwards delete the value from Mathematica's memory. I ... 1answer 72 views ### Output a symbol from Module or Block I have troubles to output an entire symbol, a function in this case, from a module or a block. For instance myf = Block[{f}, f[3] = 33; f[4] = 4; f] Then I want ... 0answers 117 views ### Long running time I gave this data as input: ... 1answer 133 views ### How to generate specific function using BSpline command/ I want to generate an approximation function that fits a curve to points. My goal is to obtain an actual formula. Is this possible with the BSpline function? Using the following code: ... 1answer 43 views ### Reducing Output length by introducing new variables [duplicate] I have outputs like "expression/(1+3*c^2) +anotherexpression/(1+3*c^2)" and so on. Is there any way to set 1/(1+3*c^2)=A where A is a new variable so that the output reads like "A*expression+A*... 1answer 99 views ### How to know at which point of a calculation I am while using Table If I use a code of this type: Table[foo[i], {i, 0, 10}] Mathematica won't output anything until it is done: is it possible to know at which point of the ... 1answer 214 views ### How to update Print-out “in place”? I want to run an exhaustive search algorithm that will take several hours to finish, so I'd like to have it execute Print statement periodically, showing the ... 1answer 87 views ### Print prints into the Messages notebook rather than into the evaluation notebook Some time ago I noticed that the results of the evaluating the function Print[something] does not emerge in a new cell created in the notebook where the operation ... 1answer 117 views ### Output resets when after closing/reopening the file I've been having an issue in a project I am working on for a demonstration that involves a manipulate containing buttons that influence local variables. In essence, the problem is demonstrated by this ... 1answer 386 views ### Write numbers to a file I want create file with some text (and numbers). This is my code. ... 1answer 364 views ### How to output a bat file and execute it? I tried to write a bat file which helped me rename files. Command to do this in that file is "ren file1 file2" which is equivalent to RenameFile[file1,file2]. ... 2answers 190 views ### Use only exponents (no radicals) in output expressions Radical symbols ($\sqrt{\,\,\,\,}$) are the devil. Is there any way to get mathematica to never use them, and instead express everything as an exponential? i.e. I want ... 2answers 150 views ### Set all output to be of specific form I want every output expression in a notebook to use //PowerExpand and also to format numbers as scientific. Is there a way to do this without explicitly calling <... 1answer 39 views ### How to output local variables when error message is generated without interrupting evaluation? I am running a calculation to generate a dataset. I use several iterations to sweep over a parameter space. A few times an error message is generated (which is not the problem per se). Is it possible ... 1answer 321 views ### How to record all the output (including error messages) of a mathematica script in a file? Is it possible to record all the output of a Mathematica script to a file? I am looking for the Mathematica equivalent of ... 1answer 100 views ### Retain original form of formatted equation [duplicate] I am having trouble getting Mathematica to retain my original equation form. For example: As you can see, even though I use HoldForm, it still changes the style of my equation. Very frustrating. 3answers 223 views ### Make equation size larger when using TraditionalForm If I am using TraditionalForm, how do I make the output larger in size? I don't want to change the general font size of the GUI, just make the output of one expression larger. I tried: ... 0answers 30 views ### Ignore$MinPrecision when using Print

I have a function that contains a For loop and sometimes takes several hours to run. It's important that I keep a high precision, and I insert ...
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### Why can I edit only one character of the output of a Dynamic expression?

Try this: DynamicModule[{foo = \[Placeholder]}, foo] Note how we're able to edit the placeholder in the output, e.g. replace it with 42:     ...
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### Head of a MatrixForm expression?

An example in http://www-zeuthen.desy.de/theory/capp2005/Course/hahn/mathematica.pdf amounts to the following ...
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I need to turn my Mathematica output (in string form) to a form that I then need to feed to Maple, and specifically I'd need all multiplications to be marked by * (as opposed to x or, as it happens ...
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### Combine multiple outputs into a pane [closed]

Probably unnecessary detail: So here's what I'm envisioning. I have several outputs from different calculations (perhaps several ListAnimated tables of GraphicsGrids of plots). In one, I did all the ...
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### Behaviour of out (%%…%) with comments

Can please someone explain to me the diffrent behavior of this code (6 - 3); (5 - 3); (4 - 3); {%%%, %%, %} Out= {3, 2, 1} and this one ...
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### Breaking up long equations in TeXForm

If I have a horrifically long expression and output it to TeX using TeXForm, I get a long equation which needs to be split up into multiple lines. But splitting it up manually can be quite cumbersome. ...